Signaling means



S. N. WIGHT.

SIGNALING MEANS. APPLlATloN FILED omil 1. |911. RENEWED Aue. 2.1919.

1,330,106. Patented Feb.10,1920.

snnewrck N. Wren'n'or ROCHESTER,

SIGNAL COMPANY, OF GATES, NEVI YORK,

NEW YORK, ASSIGNOR TO GENERAL RAILWAY A'CORPORATION OF NEW YORK.

SIGNALING MEANS.

Application filed October 7, 1911, Serial No. 653,34

l controlled device.

' The primary object. of this invention is to produce the closing of a normally opencircuit by the movement of a train ontov a track circuit section from one directiombut to prevent the closing of the same open circuit by a movement of a train from the other direction onto Said section, ther produce an opening of a normally closed break in the vnormally open circuit Ibythe presence of a train uponan adjacent track circuit section.

In describing the invention in detail reference will be had Ato the accompanying drawings in which like characters of reference refer to like parts and in which, Figure 1, is. a diagrammatic representation of the location of signals as ordinarily Vplaced upon a single track automatic block signaled railway; Fig. 2, is a diagrammatic repre-v sentation of the preferred form of circuits for attaining the above stated primary o bject of my invention. Y

The signaling of single track railways is often accomplished by locating Vthe signals as shown by Fig. 1. In this ligure, numerals, 1,2, e, 4, 5, c, 7, e, 9, 10,11 and 12 designate blocksignals, whichy incl-udc the ordi- V nary semaphore arin which is caused to move into lthe ordinary yand well known `positio-ns by the operation of some form of motor.. The motor is controlled in its. movements by the `presence of a train' upon the rails of the track either in advance of, or in the rear of the signal to which it is con'- nected, or both. As ordinarily installedthe signal'.Y would exhibit the semaphore arm in the .fullclear or `90 position as shown by the figure, to a train approaching in the direction of the arrow w, if'no train were present upon any portion of the track between the insulating joint 13 and the insulating and to lfur- ,fully shown,

2. Renewed Augusta 1919. seriaiNo. 314,986.

joint 17. If a train were present upon any part of thetrack between insulating joints 13 andy 16, the signal 7 would exhibit the emaphore ar'in in the 45 or caution posiion.

Signals 2, 6 and 11 are controlled similarly to signal 7.

Signals 3 and 4 are what are termed, intermediate signals and merely govern what are' called following moves, that is, they keep trains which are' moving in the same direction, properly spaced. i

The signals 9 and 10 servethe same function as the signals 3 and 4, but govern trains moving in the opposite direction.

The section of track included between the insulating joint 15 and the insulating jointV 21, is what istermed a single track block, the entrance of trains thereto moving in opposite directions, is controlled by the signals 5 and 8. These signals are normal danger signals, thaty is, in the absence of trains the semaphore arms of the signals are in` the horizontaler danger position, but

-upon the approachof a train they move to the full clear or 90 position if no train A'moving in the opposite direction is in the vblock and nq train is in the block moving in the same direction as the approaching train. In the system of signaling invented by Wilmer W. Salmon and Frank L. Dodgson and described and claimed -in application Serial No. 607 ,098, filed February 7th, 1910, a means is provided whereby the Vsignal 5 or thesignal 8 may assume the 45 or caution position if a train is in the single track' block when a following train appreaches either of the signals. l

The means for causing 'the signals 5 and $5 to assume the operated aspect is controlled the track circuit sections between insulating joints 14 and 15 for signal 8, and 21 and- 22 for signal 5, the arrangement being such that the entrance of a train upon the section included between vinsulating joints 14 and 15 moving in the vdirection of the arrowv 00 will cause the signal 8 to assume an operated as ect if no train is present upon any part o the trackway included between the insulating joints 15 and 22,

Specification of Letters Pat-ent. PatentedFeb, 10, 192() which is inoving in adirection opposite to that of the approaching train, and the signal 5 will exhibit an operated aspect to a train approaching in the direction of the A'arrow y, when said train passes upon the sec# tion of track included between the insulating joints 21 and 22, if no train, is present upon the traclway includedy between the vinsulating joint 21 andthe insulating joint .1i .i 14. Such a method or control is indicated by the lines 24 and 25.

YThe system of signaling heretofore inentioned which was invented by /Vilnier V.

Salmonl andy Frank L. Dodgson, providesV means jivheieby :trains moving in the saine direction can enter the single track. block withoiit Waiting for a preceding train in the singletrack 'block to pass out therefrom. Such a system racilitates the movements of ,trains and allovvsa much larger number of trains to pass over a singleV track line in th.e stmt length 0f time, for, .e tram Dit ing in the. direction of the arrovv m upon vthe singletra'clcblock may be immediately followed y,into said Vbloc-k` by another train moving in the direction `of the arrow a' Which lle ,ter Vtrain may also be immediately ,follerid'ltv another train merits .in the direction VOt the .arrow .and .S0 0.11,-

Astlie mere presence of a train upon the clearing sections, to-Wit: the section Vof track betiien insulating joints 14 and '15, and 121 fand 22 causes either-thesignal 5 o r the 'cleariiigsection B, cause the signal 5 to eX- hibitfan' operated aspect, but by the movement of the signal 5 to exhibit anV operated aspect, the controlling circuit for an oper-- ated aspect of signal fly is broken, therefore, a following train moving inthe direction of the ari-civ 0i moving upon the clearing section A, would be unable to cause the signal 8 to laSsu nife"an operated aspect until the preceding train hadr passed beyond the limits ot the clearing section Bi In some ,Ces the clearing section directly op-i posite .a station or stopping place and, con-y sequently. is occupied for a considerable :length of time bya train and as the train prevents the lexhibition of an 'operati-idaspect bysignal 8 during all the time that it is upon the lclearing section B, it is desirable to provide a mea-ns whereby a train moving Y in the direction 'of the arrovs'pt will not cause the signal 5 to exhibit an operated 'aspect and thereby break the circuit `of the signal so as to prevent the signal 8 from `exhibiting an operated aspect to a ifollovv-V ing traine moving in thev direction VVof the l' V arrow a".

Itis also objectionable from the standpoint of economy to allow signals 5v or 8 to clear `behind a train, for such a clearing movement Would be a needless Waste of energy, and furthermore a clearing of eithrsignal 5 or 8 under such conditions would cause a reversal of Ithe .positions of the intermediate signals asordinarily controlled thus resulting in a .further Wa'steof illleigy- Y n Y Y As heretofore lstatedit is a primary object rovide ysuch a of "anplitaiittinvestite t0 i i means as k before stated, ,W ichV means is Shown destemleatitally by F1a. 2, in

-which A, designates .the yclearing section consisting of the portion oftraclmay incliided be# tween. insulating joints 14 and 1,5, and

gnates the section voi" trackivay .in-

eliided betivee'nthe -insulating joints 15 and In Figf, Idesignates a'source oft" cur- .,ren't, the terminals of which are connectecl to the two .track'rails 27 v and L28; .29 ldesignates a source "of current the Vtivo ,terminals ,of vvhi'` are connected to the tiiotrack rails and Q8; e0 and 31 designate electro-magnets, the terminals' ofwhich are connected to'th'etrack rails 27 and 28 .in the gectijons A land C, if,'espectively; 32 and 33 designate inoyable' armatures controlled hv ,the detttotllesatt 50;: and Stand designate n iovable armatures controlled by the electro-magnet 31'g` .36 designates a. i

Y YStiller .of etaient; 37 i designates .elettroinag'et Vcontrolling movable armatures 38 and 39.

The in overnentof a train onto the section A, movingin tliealiiectioii of the ari-oir m, causes a deenergization yof electro-magnet l30, as the current vfrom the source 26 is shuiited through ,the Wheels and axles lof the train thus causing relay armatures 32 and 33 to .drop upon back contact points. A

circuit .will be thus tornare/d in `which current s; positive terminal of ciirflows follow v y y Wires t() and fil, armature rent source 3l).

iio

lfhivire 4t2, armature 3.3, Wire lit, armature 35, wir@ siehst' mechanism 'et signal. Si Wires 4G and et'to the negativev terminal. of

the SQUITCQQ .Current rThe,Cliritltt flowing 'in the above traced path will lclause the.

meter attached t the Stmathtle' arm Of Signal .8 'te more; this movies thtmephore arm gf ignal 8 teau Operated eSpeCt is Well undenftoed bv these Skilled inthe arti The movement. 0f thev train ,Upon the ailettes .C thereafter'Willittititt the triat- Vao ture 35 to drop, thus breaking the continuity of the circuit 'above traced and thus causing the semaphore' arm of signal 8 to returnk to has made use of the electro-magnet 37 whichl is energized when a train spans the insulating joints l5, part of the train resting upon the section C and part upon section A. Under such conditions current flowsin the following path: positive terminal of the source of current 36, wires 40 and 48, armature 32, which is under such conditions in its lower position, wire 49, electro-magnet 3,7, wires and 51, armature 34, which is under -such conditions in its lower position, and

wires 52 and 47 to the negative terminal of the source of current 36. The current flowing in the above traced path energizes the electrosniagnet 37 and causes the armatures 38 and 39 to move upwardly so causing the continuity of the previously described signal circuit to be broken between armature 39 and wire 41. I

In order, however, to fully attainthe object of applicants invention, the armature 39 must beheld in its raised positionduring all of the time that the train which entered section A, moving inthe direction ofthe arrow j/, is upon the rails of clearing section A.

Such a result is accomplished by causing a continued energization of the electromagnet 37 by current flowing in the following path:

positive terminal of the source of current 36,

wires 40 and 48, armature 32, which is when a train is upon section A in its lower position, wire V49, electro-magnet 37, wires 50 and 53, armature 38 and wires 54 and 47 to the negative terminal of theA source of current 36. The current in the above traced path flows as long as the train considered, is

upon the rails of section A, consequently,

the circuit for the signal 8 isl maintained broken between'wire 41 and armature 39, and although the normally open break bctween` armature 33 and wire 42 is closed,no current can iow in the circuit to move the *signal kSto an 'operatedaspect It is, of

course, t0 be understood that other means Yfor controlling` the circuit of the signal 8 will ordinarily be interposed in the wiresvr 45 and44.

Applicant has, therefore, devised a means whereby a signal governin the entrance of a track circuited block as maybe moved to an operated aspect vby the entrance of a train upon a track circuited clearing section as A when the train enters upon such track circuited clearing section at the end remote from the track circuited block, which means,

also prevents a movement of the signal to an operated aspect if a train entersvupon the track circuitedclearing section after having first moved over tlie track circuited block and the result is accomplished solely by means governed by the track circuited block and the track circuited clearing section.

' In the system invented by Wilmer W. Salmon and Frank L. Dodgson heretofore referred to, a normally open circuit is closed by the entrance of a train from one direction into a block section, and yisnot closed by the entrance of a train into the block lfrom the other direction. Such a circuit lcould be used to govern a signal in the manner shown in this application, by applying such system of control to signal 2 for instance and thereby controlling the clearing of signal 8 by direction of train movement, for which reason, as this invention embodies 'a principle of operation, to-wit: the control of a circuit by the direction of train move-v ment, it is considered to be a specific forni of the generic invention fully shown, described and claimed kin the joint application of `filmer IV. Salmon and Frank L. Dodgson, heretofore mentioned. I Having` thus described a preferred form illustratingthe principle of my invention, what I claim as new yand desire toY secure by Letters Patent, is:

l. In a lblock signal system; a trackway composed of rails; means to divide the trackway into a forward track circuit section and a rear track circuit section; sources of current one connected to the rails of each section; translating devices, one connectedto the rails of leach section;'a third translating insaid circuit controlled by the translating ,device connected to the iearsection; a nor` vmally closed break iii said circuit controlled by, the forward section; a normally closed break in said circuit controlled by tlievtliird vtranslating device; a normally open circuit for the third translating device; two normally open breaks in said last mentioned open circuit controlled, one by the translating device connected to the rear section and one controlled by the translating device 'connected to the forward section; a second nori'nally open circuit for the third translating device. including the normally open break VlastV mentioned controlled by the transl-ating device' connected to the rear section; anor-A mally open break in said last mentionedopen circuit controlled by`r the third translating device itself;

2; VIn a signaling system for railways, in

l a source of current for supplyf ling energy to said circuits.

'. controlling circuits for said .translatin kdevice,. one.o.f said controlling 1circuits ing governed jointly by .the track circuits of both -yof said `.two `track sections rand .'being closed When both of said .track sectionsare occupied, the `other of .said :controlling lcircuits being governed separately bythe track circuit 'of the ,first fnientioned track section and 'being closed when said first mentioned Y track section is occupied andsaid translatin device is energized; and ymeans `four sign .ingvgoverned by said normally open circlllt- ,3. In a .signaling system for railways, in

combination: a trackci-rcuit block; a si nal for guarding the entrance to .said ylo ook and having anormal .biased position .andop- Y .erated osition; a track `circuited clearing section inthe rear of said signal; a circuit for governing said signal .controlled jointly by the track circuit of said clearing section and a track circuit of said block and being capable of being closedV when said clearing l section is occupied and said block is not occupied; a normally closed circuit controller included in said circuit; means vfor operating said circuit controller; a preliminary energizingv circuit for saidl last mentioned means governed jointly by the track circuit of said .clearing section and a track circuit o f said block; and a maintaining circuit for said last mentioned means governed separately by tlietra'ck circuit of said clearin section.

4., In a signaling s stem for rai Wa s, in combination: a stretc of'track divide` into track circuit sections; a signal for govern-- ing traffic in one direction of 'said stretch; a circuitfor controlling said signal; a stick relay for governing saidci'rcuit; andftwo controlling circuits for said stick relay, one of said controlling circuits being governed jointly by the track circuits of a track sec-r f tion in advance of and a track section in the,

yrear of said signal, andthe Vother of said controlling circuits being governed separately by the track circuit of the track section in the rear of said signal.

5. In a, signaling system for railways, Ain Combination: a Stretch of track divided into track circuit sections; a signal for govern- Aing traffic in one direction of said stretch;

Aacirjcuit -for.governing said signal controlled byztlie :track circuit fof atracksection in @advance of' saidfsignal.` and interrupted When that track rsection Vi-s occupied; a normally closed circuit controller included vin said-circuit; :a -stick [relay `for governing v"'seid@ circuit controller; a normally uopen preliminary energizing :circuit including fsaid stick relay and governed jointly `byV the track circuits of ytwo lof said track sections adjacent dtoi-thesignal; .and a normally fopen ymaintaining circuit including said fsti'ck Vrelay and 4governed separately by the track circuit of :one

of said two :track sectionsand bygsafid relay itself.

6. III asignaling system for railways, lin

combination: a stretch of trackdivided into track circuit sections; `a signal for ,governing c traffic .in :one direction lof saidstretch;

'a circuit. 'for controlling :sa-id signal governed fby a y.track l"circuit of a :tracksection i-n the yrea-r of said signal; and means including .a normally denergized stick relay for nullifyfing lthe controlling effect pro-Y duced on said circuit by Y:the track fcircu-it of said rear track section4 when .a trainV movlng -1n' the vdlrectlon opposite to the direct-ron l-of traliio governed vby said signal ,passes into said rear tracksection c v Y 7. In a .signalingr .system 'for railways, Ain combination: a stretch oftra'ck Ydivided into track circuit sections; a signal tor govern- .ing traic in one direction of the stretch; .a circuit for controlling said signal; a .normally denergi-zed stick rel'ay for controlling said circuit; a preliminary energizing circuit for said stick relay governed jointly by track kcircuit sections on opposite sides ofthe signal; and fa maintaining circuit for said stick relay controlled by a track circuit section in the rear of the vsignal independently ,of any track circuit sectionsin advance of the signal. 8. In a signaling system for.railways,' in combination: a stretchof track divided into track circuit sections; a :signal for governing trailic in oneldirection; a normally closed circuitv controller; a normally .'denergized stick relay for opening said circuit controller when energized; a preliminary energizing circuit for saidstick relay controlled jointly y by track circuit sections/ion opposite sides of the signal; a maintainingV circuit for said stick relay including a front Contact thereof and controlled by a track circuit section on one side of the signal'independently of any track circuit section on'v the opposite side .ofV

the signal; and a circuit for signaling including saidVv circuit f controller.

9. VIn a signaling system for railways, inV

combination: a stretch yof track; a. signal for governing traffic in one direction; a. circuit.`

for controlling said signal a normally closed Vcircuit controller includedV in said circuit; and means'incl-uding a'normally denergize'd stick relay for opening said circuit controller' and maintaining it open When a train travels in the direction opposite to the` direction of traflic governed 'by the signal and until such train has advanced to a predetermined point in the rear of the signal.

10. In a signaling system for railways, in combination: a stretch of railroad track; a signal for governing traflic in one direction; a normally closed circuit controller; a normally denergized stick relay for opening said circuit controller When energized; circuit controlling devices separately responsive to the presence of any part of the train on predetermined portions of the track on opposite sides of the signal; a preliminary energizing circuit for said stick relay including said circuit controlling devices; a maintaining circuit for said stick relay including a front contact thereof and having its conn tinuity otherwise dependent solely upon the presence of a train on a predetermined portion of the track extending from one side of the signal; and a circuit for signaling including said normally closed circuit controller.

11. In a signaling system for railways, in combination: a stretch of track; a signal for governing traiiic in one direction; a circuit for controlling said signal; a normally deenergized stick relay Jfor interrupting said circuit When energized; means for energizing said stick relay by trains traveling in either direction; and means for maintaining said stick relay energized after it has been initially energized so long as a train occupies a predetermined portion of the track in the rear of said signal.

SEDGWICK N. WIGHT. Witnesses:

LILLIAN L. PHILLIPS,

M. CHARLOTTE GREGORIUS. 

